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1. Parametric dependence of hot electron relaxation timescales on electron-electron and electron-phonon interaction strengths

   https://doi.org/10.1038/s42005-020-00442-x  

   Wilson, Richard B.; Coh, Sinisa (December 2020, Communications Physics)

   null (Ed.)

   Abstract Understanding how photoexcited electron dynamics depend on electron-electron (e-e) and electron-phonon (e-p) interaction strengths is important for many fields, e.g. ultrafast magnetism, photocatalysis, plasmonics, and others. Here, we report simple expressions that capture the interplay of e-e and e-p interactions on electron distribution relaxation times. We observe a dependence of the dynamics on e-e and e-p interaction strengths that is universal to most metals and is also counterintuitive. While only e-p interactions reduce the total energy stored by excited electrons, the time for energy to leave the electronic subsystem also depends on e-e interaction strengths because e-e interactions increase the number of electrons emitting phonons. The effect of e-e interactions on energy-relaxation is largest in metals with strong e-p interactions. Finally, the time high energy electron states remain occupied depends only on the strength of e-e interactions, even if e-p scattering rates are much greater than e-e scattering rates. 

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2. Respective Roles of Electron-Phonon and Electron-Electron Interactions in the Transport and Quasiparticle Properties of SrVO3

   https://doi.org/10.1103/PhysRevLett.133.186501  

   Abramovitch, David J; Mravlje, Jernej; Zhou, Jin-Jian; Georges, Antoine; Bernardi, Marco (October 2024, Physical Review Letters)

   The spectral and transport properties of strongly correlated metals, such as SrVO3 (SVO), are widely attributed to electron-electron (𝑒−𝑒) interactions, with lattice vibrations (phonons) playing a secondary role. Here, using first-principles electron-phonon (𝑒-ph) and dynamical mean field theory calculations, we show that 𝑒-ph interactions play an essential role in SVO: they govern the electron scattering and resistivity in a wide temperature range down to 30 K, and induce an experimentally observed kink in the spectral function. In contrast, the 𝑒−𝑒 interactions control quasiparticle renormalization and low temperature transport, and enhance the 𝑒-ph coupling. We clarify the origin of the near 𝑇2 temperature dependence of the resistivity by analyzing the 𝑒−𝑒 and 𝑒-ph limited transport regimes. Our work disentangles the electronic and lattice degrees of freedom in a prototypical correlated metal, revealing the dominant role of 𝑒-ph interactions in SVO. 

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3. Nonlinear Effects of Electron‐Electron Collisions on ISR Temperature Measurements

   https://doi.org/10.1029/2019JA026753  

   Longley, William J.; Oppenheim, Meers M.; Dimant, Yakov S. (July 2019, Journal of Geophysical Research: Space Physics)
4. Local signatures of electron-electron scattering in an electronic cavity

   https://doi.org/10.1103/PhysRevResearch.3.013287  

   Gold, Carolin; Bräm, Beat A.; Steinacher, Richard; Krähenmann, Tobias; Hofmann, Andrea; Reichl, Christian; Wegscheider, Werner; Shayegan, Mansour; Ensslin, Klaus; Ihn, Thomas (March 2021, Physical Review Research)

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5. Role of electron-electron collisions for magnetotransport at intermediate temperatures

   https://doi.org/10.1103/PhysRevB.102.245117  

   Lee, Woo-Ram; Finkel'stein, Alexander M.; Schwiete, Georg (December 2020, Physical Review B)

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